1143002311 has 4 divisors (see below), whose sum is σ = 1246911624. Its totient is φ = 1039093000.

The previous prime is 1143002299. The next prime is 1143002321. The reversal of 1143002311 is 1132003411.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1143002311 - 2⁵ = 1143002279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143002321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51954640 + ... + 51954661.

It is an arithmetic number, because the mean of its divisors is an integer number (311727906).

Almost surely, 2^1143002311 is an apocalyptic number.

1143002311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1143002311 is a deficient number, since it is larger than the sum of its proper divisors (103909313).

1143002311 is a wasteful number, since it uses less digits than its factorization.

1143002311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103909312.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1143002311 is about 33808.3171867515. The cubic root of 1143002311 is about 1045.5601831597.

Adding to 1143002311 its reverse (1132003411), we get a palindrome (2275005722).

It can be divided in two parts, 114300 and 2311, that added together give a palindrome (116611).

The spelling of 1143002311 in words is "one billion, one hundred forty-three million, two thousand, three hundred eleven".